i18n(schema): author procest schema-level titles in English + NL l10n

[rubenvdlinde]

Summary

• Rewrites 9 Dutch schema-level title values in lib/Settings/procest_register.json to idiomatic English (property titles, keys, enums, descriptions untouched — verified programmatically against merge-base).
• Adds missing identity/NL l10n keys for the newly-English titles in l10n/en.json, l10n/en.js, l10n/nl.json, l10n/nl.js.
• Bumps lib/Settings/procest_register.json info.version 0.13.1 → 0.13.2 and appinfo/info.xml <version> 0.3.5 → 0.3.6.

Schema	Old title	New title
catalogus	Catalogus	Catalog
voorstel	Voorstel	Proposal
parafeerroute	Parafeerroute	Endorsement Route
parafeeractie	Parafeeractie	Endorsement Action
paraferingAuditEntry	Parafering audit entry	Endorsement Audit Entry
bezwaar	Bezwaar	Objection
bezwaarDecision	Bezwaar Decision	Objection Decision
beroep	Beroep	Appeal
bezwaaradviescommissie	Bezwaaradviescommissie	Objection Advisory Committee

Test plan

• git diff of the register shows only schema-level "title": value changes + the info.version line
• Scripted check: schema key set, per-schema property-key set, property titles, and enums identical to merge-base
• python3 -m json.load on register + l10n json files
• node -c on l10n .js files
• No npm build run; no live instance touched